Match class

$match aggregation stage

Stage description

Filters the documents to pass only the documents that match the specified condition(s) to the next pipeline stage.

Examples:

  1. Using SelectorBuilder query

Dart code:

Match(where.eq('author', 'dave').map['\$query']).build()

Equivalent mongoDB aggregation stage:

{$match: {author: "dave"}}
  1. Using aggregation expression:

Dart code:

Match(Expr(Eq(Field('author'), 'dave'))).build()

Equivalent mongoDB aggregation stage:

{$match: {$expr: {$eq: ['$author', 'dave']}}}

https://docs.mongodb.com/manual/reference/operator/aggregation/match/

Inheritance

Constructors

Match(dynamic query)
Creates $match aggreagtion stage [...]

Properties

hashCode int
The hash code for this object. [...]
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

build() Map<String, dynamic>
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
toString() String
Returns a string representation of this object.
inherited

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited